Audiotape and videotape players have electromagnets called heads that record and read information on tapes coverd with tiny magnetic particles.
Magnets in speakers transform the signal into a sound by making the speakers vibrate. An electromagnet called a deflection yoke in TV picture tubes helps form images on a screen.
Generators in powerplants rely on magnets like the ones found in electric motors to produce electricity. Transformers are devices that use electromagnetics to change high-voltage electricity to low-voltage electricity needed in homes and buisnesses.
Scientists and engenieers have developed trains that use electromagnetics to float it above the track. They also use the repeling forceof a magnet to levitate the train. It eliminates friction so it has an advantage of higher speeds over ordinary trains.
Magnetic bottles are created to hold plasmas which is so hot they would melt any container made of ordinary material, So they hold it in a magnetic field, (magnetic bottles)
Magnetic Renasance Imaging also known as MRI. The patient lies in between two magnets and the magnetic fields which cause some of the domains in the human body to align such as the heart, brain, spine and other internal organs. physicians observe magnetic fields generated by some of the organs.